Question

Choose the answer.












Determine which relation is a function.








A.

{(–3, 2), (–2, 3), (–1, 2), (0, 4), (1, 1)}








B.

{(–3, 2), (–2, 3), (–1, 1), (0, 4), (0, 1)}








C.

{(–3, 3), (–2, 3), (–1, 1), (0, 4), (0, 1)}








D.

{(–3, 2), (–1, 3), (–1, 2), (0, 4), (1, 1)}

Answer 1

please help I will give medal and fans:)

Answer 2

It is a function if, every element in your domain maps to exactly one element in your range.

Answer 3

As you can see in B for example,

The X value of zero, maps to two different Y values, 4 and 1
so this set is not a function.

Answer 4

so do u mean b is the answer?

Answer 5

no B is one of the NOT answers

Answer 6

For a set of points, in order to tell if it is a function, check to see if any of the x values in (x,y) corresponds to more than one Y value.
In the case of B, you have two points (0,4) and (0,1) which has a x value of zero mapping to two different y values of 4 and 1.
If this is the case, it is NOT a function.
Each X value has to only have one and only one Y value.

Answer 7

D

Answer 8

I'll give you one more hint.

It is not D) because...
(-1,3) and (-1,2) are two points with a single x value corresponding to more than one y value.

Answer 9

So by that logic.. It is either A or C

Answer 10

C

Answer 11

What made you say that?

Answer 12

A is the right:)